Merge pull request #99 from pataquets/docker-publish--get-image-tags-…

…from-git

Publish Docker image action: get image tags from git's.

.github/workflows/docker-publish.yml

@@ -1,8 +1,5 @@
 name: Publish Docker image
 
-env:
-  DOCKERHUB_IMAGE: matrix-commander
-
 # on: push
 # on: pull_request
 # on:
@@ -24,10 +21,6 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v3
 
-      - name: Read VERSION file
-        id: getversion
-        run: echo "::set-output name=version::$(cat VERSION)"
-
       # Required if building multi-arch images
       - name: Set up QEMU
         uses: docker/setup-qemu-action@v2
@@ -45,10 +38,23 @@ jobs:
           username: ${{ secrets.DOCKERHUB_USERNAME }}
           password: ${{ secrets.DOCKERHUB_TOKEN }}
 
+      - name: Docker metadata
+        id: meta
+        uses: docker/metadata-action@v4
+        with:
+          images: ${{ secrets.DOCKERHUB_USERNAME }}/${{ github.event.repository.name }}
+          # generate Docker tags based on the following events/attributes
+          tags: |
+            type=ref,event=branch
+            type=semver,pattern={{version}}
+            type=semver,pattern={{major}}.{{minor}}
+            type=semver,pattern={{major}}
+
       - name: Build and push
         uses: docker/build-push-action@v3
         with:
           file: docker/Dockerfile
           platforms: linux/amd64,linux/arm64
           push: true
-          tags: ${{ secrets.DOCKERHUB_USERNAME }}/${{ env.DOCKERHUB_IMAGE }}:latest, ${{ secrets.DOCKERHUB_USERNAME }}/${{ env.DOCKERHUB_IMAGE }}:${{ steps.getversion.outputs.version }}
+          labels: ${{ steps.meta.outputs.labels }}
+          tags: ${{ steps.meta.outputs.tags }}